I love that kid, he's super smart and passionate, and Kev talking to him like an adult is awesome to see. I think a lot of times grownups don't give kids enough credit and talk to them a bit like they're not equal.
@@creamyhummus That is actually the best way to get to a kid is to treat them as an equal. Coming from a guy who worked for foster parent's doing part time counseling for children. I have heard some horrible stuff coming out of foster kids once they realize that you are there to help them and are not 'just another adult'.
You need the rear end downforce. Otherwise it will spin. I have faced that problem. Just add a rear diffuser, if you donot want the drag caused by the rear spoiler. Best of luck. Love from India
Thank you Mr Kev. I'm running 3 of these around a velodrome here in Australia. Cars run for 15mins at full throttle. 2s 5000mAh 1. 3650/3500kv = 80kph 2. F 540 v2. 4370kv = 85kph 3. 3650/5200kv. = 92kph You have been a great inspiration to the Talbot crew downunder.
One problem I’ve noticed is when the ref reach a certain speed it spin out so since the wing is flat it can either create negative lift or positive lift, in conclusion the front isn’t griping toward the ground and causing the front to be light or less grip then the rear
@@_M_a_r_t_i_n_M Yeah you really can't rely on having just a flat surface if air can go above and below it. The angle of the car is then going to determine if it's making lift or downforce. He at least needs to put some sort of a kick up on the trailing edge to give it enough downforce to keep it stable. Looks like every time it got up around 60mph the rear end wanted to come around like it was on ice.
@@kasuraga true, it’s probably making downforce due to attack angle right up until it hits a certain speed, then once the rear is lower than the front the attack angle switches to generating lift and it spins.
so basically the rear wing is flat sitting still, but I suspect the front lifts while the rear end sinks which would point the rear wing down to the ground slightly creating lift, thus spinning out, the rear seemed like it was a bit soft and low, so he's gonna have to either give that wing some positive angle or raise the rear end up with with some thicker springs/tighter. Either way its a mixture of imbalance in the overall form of the rc, with the larger battery, the foam wheels, the wing and the suspension set up as well as the size of the rc. I also suspect the rears are locked up while the fronts might have a bit of play to them with the silicon plugs so more power is getting sent to rear effectively pushing its own self into a spin.
If it helps, my 100mph 124019, I have stiffened the shocks, lowerd the front, raised the rear (not to far) I have a massive wing for stability and a slight wing lip for a bit of downforce. Same body etc..
New subscriber! Kevin is so happy and fun to watch. He literally puts you in a better mood. I wish I could afford all the fun stuff. He has probably worked his ass off to get where he is now. Congratulations Kevin! Keep it up! From Texas
Even without downforce it could still, in theory, affect handling. It could affect the rotational speed, so for example when it wants to swap ends on him, it's less likely. Pay attention to the wing design on his other speed build. Tall wing, no downforce.
Correct. If you chuck a bit between the two, Milwaukee will out torque Dewalt, and after destroying the Dewalt, it will keep running reliably. The battery system in Dewalt is nice, though. Those 60v packs are good to have in the shop.
Try stiffer springs and running higher rake, so the back is higher than the front. This increases the area the air needs to fill effectively sucking the car to the ground with no added drag
In physics, an object always wants to have the center of weight in front of the center of drag, so if this car is turning round then it may mean the center of weight is in back of the car and somehow the center of drag is at the front. It can also be tire setup, so I think the camber and toe adjustments can be played with.
@@stevengao9568 oh, ok thanks, I am building my own speedrun car, and it got a bit wobbly today. I am going to 3D print a more agressive wing or the back
1.Try to completley lock the diffs up (because when it hits bumps on the surface , one wheel is gonna catch air and will get more power than the others, and when it touches the ground again it will spin faster than the others and will make the car spin) 2. Put harder oil in the shocks (the soft bottoms out and as it hits the floor it will make the car unstable) 3.Put harder springs in it (so when the shocks compress it doesnt take such long time to get to a normal position again) 4.definetley put a wing with some degree on it, the big 200mph goes straight because its heavy and the body has a lot of downforce. but this is a small and light car, so a wing makes a big difference 5. move the shock position to make the shock less straight but the main thing will be the wing. that turning effect was so big, it gotta be the wing
It may be a bit late, but if you want to use plastic that can be heated and bent, but isn't too brittle, you could try sheets of ABS. I used it quite a bit in custom applications for car audio back in the day. We frequently used the 1/8" and 3/16" sheets. It's pretty tough but a heat gun makes it bendable and it will hold its new shape. You can sand the thicker stuff to a sharp edge if you need to, for aerodynamics.
I honestly can't tell you how happy I am to hear you mention the X01 jump Kev!! So awesome hahah Also Milwaukee Tools are top notch! Dewalts not terrible but all we buy at work is Milwaukee 👍
difussing the air around the back of the car is key. what is happening is a low pressure zone behind the rear of the care at speed this then reduces the traction of the rear tires causing them to spin faster and during a moment of traction on a rough surface they spin the care around. you NEED to have zero pressure or some possitive pressure on the rear end. During acceleration keeping the front end down is good which you thought of early on in the first video I believe. The trouble is you need continue thinking of what forces are happening on the care at different speeds : ) your life is amazing and I love you. Please tell me you're not on adderall or some other stimulant, only your life and how you have directed it as the propellant. Thank you for all you content, your editing is fantastic.
You need to limit the travel of the rear shocks to keep the tire angle flat. When the car gets to speed, the rear shocks are compressed causing the tire angle to change. Also, put some weight on the front end to balance the center of gravity. However so slightly, most of your weight is distributed towards the rear which also adds to the compression of your rear shocks.
What do you mean “tire angle”? This suspension has both upper and lower control arms… Weight distribution or “center of gravity” doesn’t matter a ton during longitudinal acceleration, as all the weight is shifted to the rear anyway.
C of G too far backwards, forwards mass wants to be at the front. hence it keeps swapping directions figure out a way to make the C of G further forward than the middle of the car
Hola Javi, excelente video, es usted un master, no solo vende coches increíbles sino que también los mejora antes de entregar a sus clientes, sin duda usted piensa más allá de tan solo la venta de un coche.
Hi Keen, I'm pretty sure you made the rear diff too stiff with the silicon ear plug that's why it is swapping ends like an old car with positraction, Also you need to add more rears toe in and front toe in. You will lose a little speed not much but it will hold a straight line and not swap ends. Try running 40k front 20k rear and 50k center diff. Foam tires are really only for prepped surfaces. spray brake cleaner on the foam tires as it will increase traction. Hope this helps. Just some of my personal experience from racing 1/8 scale on road cars. We hit speeds in the 70 mph range on the short-back straightaways. Anyway, you usually figure it out. I hope you get back to the 205 mph car. I miss that build serious and tests. My favorite videos of yours are the wrenching on the bench going out testing changes and your Monster Truck. You're a Legend, buddy.
its spinning because the rear is now heavier, so any left or right momentum spins the car, the rear fin stops the car spinning when it reaches to the front, because of the air flow. regarding the 203hp project, drag cars have a wheelie bar to stop flipping, and bigger rear wheels for more torque. Also would recommend, more foam on the wheels, and smaller rims.
for the plastic you asked for at the end, get some kydex! it’s so easy to work with and i’ve made countless things with it and it’s not brittle at all, super nice stuff and it starts deforming pretty low temp so you can hold it in place with your hands and it cools and holds its shape really quickly
It’s trying to plane What this means is that it’s creating a cushion of air for the car to glide on. The reason it spins so easily is because when you go in reverse it creates a vacuum that pulls it towards the ground. The way to fix this is create an air escape in the frame. Or lift up the back end. While also making the rear suspension very stiff. With cushiony tires to absorb the bumps.
the reason why the car keeps swapping ends because you put silicone earplugs in the diff, which locks it up and you lose all of your rear end traction. if you want traction you need to go for really thin diff and shock oils, like 3k rear, 5k centre, 5k front and you will have plenty of traction.
the car has to be 4 wheel drive if it is then try a 2 wheel drive and another reason is beacuse that the wheels is to fast so when flat out it will like pick up in the air hope this helped Ohh and i liked 😀😀😀😀😀😀
I don't know if anybody has suggested this yet, but it could be the torque backing off of the two differentials. From front to back it puts a twist under torque, and then a backwards twist when you let off of the torque. Causes the car to spin
hey kevin the steering servo on my baja 5t has recently broke and i was wondering if the heaver steering servos were better or worse that the lighter steering servos
The diffuser doesn't create downforce persay but a vacuum underneath the car. You want the front end low as possible. And you want the diffuser to funnel the air to a more narrow channel at th back end o the car between the rear wheels. That accelerates the air leaving the back of the car and creates the vacuum that holds your car down. I learned all this for actual cars
I'm pretty sure the issue is with that rear wing. on the video it looks like its slightly angled up at the front giving it up force. this lifts the rear wheels up as you go faster and at a certain point it will want to turn round the other way where the wing would then be giving downforce. try using a level to make sure the wing is absolutely flat and if its still spinning, give it a small amount of downforce just to keep the rear end down. to me it definitely looks like the rear end is going light. might not be and I may be completely wrong but worth a try.
Where I work we have had a few Dewalt impacts break badly and needed to be scrapped and with the years we have used Milwaukee we haven’t had any issues. My dad still has a Milwaukee M18 before they were fuels and it works flawlessly
I recommend you this tips for all the high speed cars, this tips are all to make the car more stable , less top speed but more stable and more downforce so that it stops spinning which is going to end up being faster : - front as low as posible and rear as high as possible - don’t put a flat rear wing because that makes the car way too unstable and if you are going to put it flat then better take it off it is just more weight that works for nothing - take all the extra things that you can away and always try to find the lightest ones if they are necessary - and use a stiffer suspension
@@danwitavan5146 only on high traction smooth surfaces. A crawler is the exception because your trying to get maximum power to each wheel. He would have been better using actual diff oil, even if it was thicker than stock.
Portercable best power tools. You need a splitter mate. For front down force. At around 65mph (first known wind velocity where efficiency becomes a factor. From 50-65 the aero becomes exponentially more or less efficient. The next wind barrier is 85mph then after that it’s 120) cheers
With the same model, I put the bottom back suspension mounts on the screw hole closer to the middle. This lifts the back with can prevent the car from flipping over and I believe can make that wing off yours useful. Hope this helps!
Kev, pls add camber to rear wheels. also make sure that the front camber is good and you have down force for the rear. Keep building that monster truck!
You need to expand the chasis to fill the gap between front and back wheels at the sides. You also need to balance weight by setting two batteries, one on each side on top of that expansion, probably outside the body of the car each as they won't fit inside, finally lower suspension is better, see sports cars.
smear some white woodglue on the tires. Not waterproof. let it dry. When they heat up the "stick" to the asphalt. Drives way better. tested it some years ago.
The locked diffs may be the issue. If there is any speed difference in any of the wheels then that would cause the others to lose grip. With the diffs open a little more then any loss or gain of grip will stay on that 1 wheel and not all 4. Also if your tyres are slightly different sizes then this may be the cause too. Bigger on the back would make the fronts spin faster and the locked diffs would not help the power transfer.
The homemade wing has considerably more mass than the stock wing. Since all that mass is behind the rear axle, it acts as a counterweight to the front end. Either go back to the stock wing, or add a proportional amount of weight to the middle/front of the car. All the extra wing weight is also why the back rides low and the suspension seems too soft.
It's the wing you made is to much weight, so it makes it switch ends. I would suggest using a plastic wing with a little more thickness then the original wing. I've done this and works perfectly. I used a heat gun to bend the plastic, and have a 3D printed wing.
It might be because when the rear squats due to the body's downforce at speed, the rear wing you made will cause lift due to its angle of attack. That little guy was actually on the right track...smart kid!
Back end squats. Makes the wing no longer flat and gives the opposite of downforce. Angle it some. Give it a bit of downforce. Check the shock travel and make sure it stays in the “downforce” position throughout
If you want my opinion, I think you have to use rubber tires rather than foam tires. I know nothing about RC cars, but I think that rubber tires would significantly improve grip, which would make the car slip less. Hope this helps 😀
Should lock the front diff and leave the rear open. The car overall doesn't provide enough downforce and with the shape of the rear of the body and the angle of the wing, it might actually be decreasing the rear end downforce. Each wing, canards and the shape of the body need to line up to channel the air and not disrupt the air flow.
You need to consider rocket science when you make a land rocket. I suspect that the CG is too far back and it is acting like a rocket when you let up on the throddle and the heavy rear is whipping around after apogee ; ) love your energy, brother. Maybe let your son narrate an entire video? That would be fun.
Try using kydex, or delrin. Kydex is what I use for skid plates, holsters, mud guards and wings. Also try adding weight to the front. Will help plant the front to the ground for tracking and steering.
Metal Spoiler too heavy, causes too much rear down force. You lose sufficient front end down pressure and lose steering. At the higher speed the front drag gets too much drag force and rotates to the back. Might sound counter intuitive but Add a front spoiler or a little weight to the front end. The down force between the front and rear needs a balanced downforce.
Center of pressure is in front of the center of gravity... Just tilt the wing a bit to give it some more drag (so that the center of pressure shifts back) and also some downforce.
Taken a look at your rear wing I would say it has some buoyancy. Lower the front as Johnny said, give the rear wing a small amount of angle. 3-5°... This should help keeping the car down. Keep in mind that aerodynamics tend to lift the car if your wing has no downforce. This results in a light back and let's your car spin.
maybe also a cender diff would help keeping it straight. as power kicks in the waight should be more on the back wheels and with a center diff the front wheels would just spin a bit faster as the back ones to "pull" it straight. but i dont know if there is something like a center diff for that RC.
the locked diffs are causing the problem, i believe. thad the same issue with friends slash, removed the locked diff and solved. difficult to make wheels track without solid axle
I'd recommend a cutting board for the underside since there ment to be abused and cheep. If you can get a set of tires made of gum rubber I'd bet they would serve well. Super cool stuff .
the rear wing is tipped back making the rear end float, when it swings around and goes in reverse the wing is causing the down force which is why it was so stable in reverse. also the "fast car" has fins vs wing so the back end cant swing side to side
Maybe put thinner stuff in the rear diff The back end is driving around the front Thinner stuff in the rear will let the front pull harder and the rear not so much The front end will pull it straight
Try removing the wing just to see what happens? Then check weight distribution next? So weird how it flips around like that. Good luck! Love the channel.
I think you need weight or downforce in the front. I believe the front is lifting or spinning and the locked up rear diff is causing torque steer once the front end loses traction. Maybe a wing off the back of a larger buggy mounted on the front
Inspiration taken from Le Mans (the film) attach some bits of string all over the car with some tape, blow air over the car and notice how the string reacts, you want the string to be as calm as possible off the back end of the car. If the string is flapping about like crazy means you’ve got rather dirty air which as there’s next to no weight for traction, could be the source of the instability
HDPE is what I would use as the bottom plate, but it would require a stiffener. They use HDPE on Kayaks and coolant bottles, you can plastic weld it with a heat gun and you will be able to shape it however you desire.
I think the esc of surpass hobby has a kick throttle after 50%. I have the same problem in two cars. It needed to program it to be smoother after 50% of throttle.
I think you need to make it more heavy. the reason being is because all the speed is giving it lift, and possibly one side has a little more weight, and as it takes drag, it could be wanting to pull to that side. Could be wrong, but maybe not
So if it drives great in reverse, than spin the rear wing around, then it should drive good fwd. Or flip it upsidedown. Also, the earplug in the rear mite be making it spin to fast and it is overtaking the front. Thanks fpr the great vids!
@5:18 the GSM-010 & 015 models can be connected to a PC to use the GNSS logger software application to view the map where it shows where you have driven.. can this new 020 use that software on the pc so we can see the route we took, or it's just whatever is on the app?
That little kid was giving you some top notch advice dude. It's awesome when you see the younger generations getting into the RC hobby.
I love that kid, he's super smart and passionate, and Kev talking to him like an adult is awesome to see. I think a lot of times grownups don't give kids enough credit and talk to them a bit like they're not equal.
Totally agree with the kid aswell
@@creamyhummus That is actually the best way to get to a kid is to treat them as an equal. Coming from a guy who worked for foster parent's doing part time counseling for children. I have heard some horrible stuff coming out of foster kids once they realize that you are there to help them and are not 'just another adult'.
And they are all smarter than we tend to give them credit for. We need to think back to our own childhoods at times.
true!
You need the rear end downforce. Otherwise it will spin. I have faced that problem. Just add a rear diffuser, if you donot want the drag caused by the rear spoiler. Best of luck. Love from India
Hii I am an Indian too and I wnat to know that where you went to do the speedrun
@@sandeepsagarbehera8122 it's in the uk
@@harryblox760 the guy literally said hes in india
You also need front down force to help with cornering if doing so
@@alloy0455 why waste your time ? He'll tell you no need for down force... just more power !!!! LOL
That rear wing looks like it would create lift with its angle. Maybe take it off or angle it for more down force.
Thank you Mr Kev.
I'm running 3 of these around a velodrome here in Australia.
Cars run for 15mins at full throttle.
2s 5000mAh
1. 3650/3500kv = 80kph
2. F 540 v2. 4370kv = 85kph
3. 3650/5200kv. = 92kph
You have been a great inspiration to the Talbot crew downunder.
@Zombed The Man no brother
I thought I was the only Aussie
@@NTfishingadventures nah cuz.
Heaps ov us.
Aussie, Aussie, Aussie
Yeah, nah, yeah
for the 3500 kV what volt are you running
One problem I’ve noticed is when the ref reach a certain speed it spin out so since the wing is flat it can either create negative lift or positive lift, in conclusion the front isn’t griping toward the ground and causing the front to be light or less grip then the rear
Rear diffuser would fix it
You might wanna put some angle on the wing. I'm wondering if at speed that wing is producing a bit of lift and causing the rear end to spin out.
That was exactly my thought. It was not acting as an inverted airfoil like it is supposed to. It is just a flat surface..
@@_M_a_r_t_i_n_M Yeah you really can't rely on having just a flat surface if air can go above and below it. The angle of the car is then going to determine if it's making lift or downforce. He at least needs to put some sort of a kick up on the trailing edge to give it enough downforce to keep it stable. Looks like every time it got up around 60mph the rear end wanted to come around like it was on ice.
@@kasuraga true, it’s probably making downforce due to attack angle right up until it hits a certain speed, then once the rear is lower than the front the attack angle switches to generating lift and it spins.
so basically the rear wing is flat sitting still, but I suspect the front lifts while the rear end sinks which would point the rear wing down to the ground slightly creating lift, thus spinning out, the rear seemed like it was a bit soft and low, so he's gonna have to either give that wing some positive angle or raise the rear end up with with some thicker springs/tighter. Either way its a mixture of imbalance in the overall form of the rc, with the larger battery, the foam wheels, the wing and the suspension set up as well as the size of the rc. I also suspect the rears are locked up while the fronts might have a bit of play to them with the silicon plugs so more power is getting sent to rear effectively pushing its own self into a spin.
@@Blaquer17 Yea! That must be it. Nice analysis guys.
You have some holes in the arms, put some screws in and lower it as low as possible. We did the 1/14 Wltoys and hit 78mph on 3S so far
moin Johnny feier deine Videos übelst👌🙃
Haha ich auch das du hier kommentiert hast Johnny is ja cool ich Feier deine Videos auch so
Hi Legende!
Hi Johnny
Er fährt mit dem Ding solange falsch bis es wieder kaputt ist deshalb schaue ich lieber deine Videos
If it helps, my 100mph 124019, I have stiffened the shocks, lowerd the front, raised the rear (not to far) I have a massive wing for stability and a slight wing lip for a bit of downforce. Same body etc..
More or less the same I did to mine.
I did swap the springs for some harder ones.
I'll bet this would work.
New subscriber! Kevin is so happy and fun to watch. He literally puts you in a better mood. I wish I could afford all the fun stuff. He has probably worked his ass off to get where he is now. Congratulations Kevin! Keep it up! From Texas
Texas gang 😆🤘
Fully agree!
You've got to ask yourself, "What exactly is that wing doing?"
Even without downforce it could still, in theory, affect handling. It could affect the rotational speed, so for example when it wants to swap ends on him, it's less likely. Pay attention to the wing design on his other speed build. Tall wing, no downforce.
More Powerrr!!! Kev Talbot, RC's answer to Jeremy Clarkson! 😂
Hammond!
You mean Tim Taylor
parcel: fragile
Kev: throws it onto his table
Yeah but I'm sure the postie did worse :P
Hands down Milwaukee. Ask any one that uses power tools for a living.
Z fuel
Facts
True Milwaukee fuel works better than dewalt
Correct. If you chuck a bit between the two, Milwaukee will out torque Dewalt, and after destroying the Dewalt, it will keep running reliably. The battery system in Dewalt is nice, though. Those 60v packs are good to have in the shop.
Between the two of them Milwaukee, but craftsman is fairly inexpensive and we haven’t had a problem out of them yet
DeWALT impact has never let me down even when they are half broken. Milwaukee is impressive but all around hands-down both are great power tools.
DeWalt is the best
I can back you up on that one yellow and black for life
Try stiffer springs and running higher rake, so the back is higher than the front. This increases the area the air needs to fill effectively sucking the car to the ground with no added drag
In physics, an object always wants to have the center of weight in front of the center of drag, so if this car is turning round then it may mean the center of weight is in back of the car and somehow the center of drag is at the front. It can also be tire setup, so I think the camber and toe adjustments can be played with.
Rate
Good point
if he adds downforce at the back, will the center of drag be pushed furthur back?
@@lukebajuke4358 Yes, but you want the center of drag to be further back and the center of weight to be as front as possible
@@stevengao9568 oh, ok thanks, I am building my own speedrun car, and it got a bit wobbly today. I am going to 3D print a more agressive wing or the back
I can’t wait for the x01 to go to the moon! That baby’s gonna fly!!
oh ya it is
That car looks awesome for the price of it! You need the rear end downforce
1.Try to completley lock the diffs up (because when it hits bumps on the surface , one wheel is gonna catch air and will get more power than the others, and when it touches the ground again it will spin faster than the others and will make the car spin)
2. Put harder oil in the shocks (the soft bottoms out and as it hits the floor it will make the car unstable)
3.Put harder springs in it (so when the shocks compress it doesnt take such long time to get to a normal position again)
4.definetley put a wing with some degree on it, the big 200mph goes straight because its heavy and the body has a lot of downforce. but this is a small and light car, so a wing makes a big difference
5. move the shock position to make the shock less straight
but the main thing will be the wing. that turning effect was so big, it gotta be the wing
It may be a bit late, but if you want to use plastic that can be heated and bent, but isn't too brittle, you could try sheets of ABS. I used it quite a bit in custom applications for car audio back in the day. We frequently used the 1/8" and 3/16" sheets. It's pretty tough but a heat gun makes it bendable and it will hold its new shape. You can sand the thicker stuff to a sharp edge if you need to, for aerodynamics.
Been waiting for this!
Excited for that xo1 to go to the mooooon!!!!
Love your vids Kev!
Did he ever send it to the moon? Been scanning through his videos but can't find a video of him ever doing it
I love how the package said fragile and kevin just trows it
Hahaha
The sad part is that they won't be treated any better by the post service..
you need more down force on the rear, try bending the wing to keep rear end sticked to the floor, you are loosing traction and that's why the rc spins
I honestly can't tell you how happy I am to hear you mention the X01 jump Kev!! So awesome hahah Also Milwaukee Tools are top notch! Dewalts not terrible but all we buy at work is Milwaukee 👍
difussing the air around the back of the car is key. what is happening is a low pressure zone behind the rear of the care at speed
this then reduces the traction of the rear tires causing them to spin faster and during a moment of traction on a rough surface they spin the care around. you NEED to have zero pressure or some possitive pressure on the rear end. During acceleration keeping the front end down is good which you thought of early on in the first video I believe. The trouble is you need continue thinking of what forces are happening on the care at different speeds : ) your life is amazing and I love you. Please tell me you're not on adderall or some other stimulant, only your life and how you have directed it as the propellant. Thank you for all you content, your editing is fantastic.
You need to limit the travel of the rear shocks to keep the tire angle flat. When the car gets to speed, the rear shocks are compressed causing the tire angle to change. Also, put some weight on the front end to balance the center of gravity. However so slightly, most of your weight is distributed towards the rear which also adds to the compression of your rear shocks.
What do you mean “tire angle”? This suspension has both upper and lower control arms…
Weight distribution or “center of gravity” doesn’t matter a ton during longitudinal acceleration, as all the weight is shifted to the rear anyway.
I assume it’s your homemade rear wing causing end swapping issue!
Yes lol the wing installed prob weighs more then the car.
Agree, should have added some downforce on that
Yeah,looks too flat. Needs angle to it
C of G too far backwards, forwards mass wants to be at the front. hence it keeps swapping directions
figure out a way to make the C of G further forward than the middle of the car
also a little downforce could help
Hola Javi, excelente video, es usted un master, no solo vende coches increíbles sino que también los mejora antes de entregar a sus clientes, sin duda usted piensa más allá de tan solo la venta de un coche.
Hi Keen, I'm pretty sure you made the rear diff too stiff with the silicon ear plug that's why it is swapping ends like an old car with positraction, Also you need to add more rears toe in and front toe in. You will lose a little speed not much but it will hold a straight line and not swap ends. Try running 40k front 20k rear and 50k center diff. Foam tires are really only for prepped surfaces. spray brake cleaner on the foam tires as it will increase traction. Hope this helps. Just some of my personal experience from racing 1/8 scale on road cars. We hit speeds in the 70 mph range on the short-back straightaways. Anyway, you usually figure it out. I hope you get back to the 205 mph car. I miss that build serious and tests. My favorite videos of yours are the wrenching on the bench going out testing changes and your Monster Truck. You're a Legend, buddy.
"The motors turned up! I ordered 4, but only 2 came."
Only Kevin can be bamboozled by the postman and still be positive about it.
Having fun is all that matters kev, great video,
Get the same wing a put it on the front bc when in reverse it was at the front and it was going straight
its spinning because the rear is now heavier, so any left or right momentum spins the car, the rear fin stops the car spinning when it reaches to the front, because of the air flow.
regarding the 203hp project, drag cars have a wheelie bar to stop flipping, and bigger rear wheels for more torque. Also would recommend, more foam on the wheels, and smaller rims.
for the plastic you asked for at the end, get some kydex! it’s so easy to work with and i’ve made countless things with it and it’s not brittle at all, super nice stuff and it starts deforming pretty low temp so you can hold it in place with your hands and it cools and holds its shape really quickly
A locked or nearly locked rear diff will be more tail happy, maybe open it up a bit
Would try putting a heavier diff oil in rather than the silicone ear plugs
Yep, been there done that, mine was at 50mph on grass/gravel, removed spool and instantly better.
Love your attitude mate, doing your eBay course Kev! Love it and the 75 habits are helping a lot too thank you Australian subscriber!
I’m thinking about joining my self not sure yet tho🤔
Me: "Kev, why do you have 5+ impact drivers and so many electric saws?
Kev: "uh, well, you see.."
he is probably like me and has a tool addiction. I have between 6 and 8 of nearly every dewalt 20v tool and still catch myself looking at new ones.
It’s trying to plane
What this means is that it’s creating a cushion of air for the car to glide on. The reason it spins so easily is because when you go in reverse it creates a vacuum that pulls it towards the ground. The way to fix this is create an air escape in the frame. Or lift up the back end. While also making the rear suspension very stiff. With cushiony tires to absorb the bumps.
the reason why the car keeps swapping ends because you put silicone earplugs in the diff, which locks it up and you lose all of your rear end traction. if you want traction you need to go for really thin diff and shock oils, like 3k rear, 5k centre, 5k front and you will have plenty of traction.
This thing is driving like how a 2wd rustler does when you press the brakes. 😂
The motor is enough for lego, cant wait to see a lego car moving 100 mph in a city lol
Just got one of those Milwaukee 3/8" stubby guns this past week they're pretty great
the car has to be 4 wheel drive if it is then try a 2 wheel drive and
another reason is beacuse that the wheels is to fast so when flat out it will like pick up in the air
hope this helped Ohh and i liked 😀😀😀😀😀😀
I don't know if anybody has suggested this yet, but it could be the torque backing off of the two differentials. From front to back it puts a twist under torque, and then a backwards twist when you let off of the torque. Causes the car to spin
hey kevin the steering servo on my baja 5t has recently broke and i was wondering if the heaver steering servos were better or worse that the lighter steering servos
Kev when will the world's fastest Rc car 202 Mph. I can't wait for you to beat the world record!
As if that's ever going to happen. ;)
Well i hope that he will beat it
@@_Jester_ He’s miles away, but I love watching him try.
when do we see the next one?
The diffuser doesn't create downforce persay but a vacuum underneath the car. You want the front end low as possible. And you want the diffuser to funnel the air to a more narrow channel at th back end o the car between the rear wheels. That accelerates the air leaving the back of the car and creates the vacuum that holds your car down. I learned all this for actual cars
I'm pretty sure the issue is with that rear wing. on the video it looks like its slightly angled up at the front giving it up force. this lifts the rear wheels up as you go faster and at a certain point it will want to turn round the other way where the wing would then be giving downforce. try using a level to make sure the wing is absolutely flat and if its still spinning, give it a small amount of downforce just to keep the rear end down. to me it definitely looks like the rear end is going light. might not be and I may be completely wrong but worth a try.
Dewalt I’ve never had one issue and the battery tends to last longer than the Milwaukee
Where I work we have had a few Dewalt impacts break badly and needed to be scrapped and with the years we have used Milwaukee we haven’t had any issues. My dad still has a Milwaukee M18 before they were fuels and it works flawlessly
Milwaukee hands down. That stubby 3/8 drive impact is one of my favorite tools ever.
I used to have dewalt the motor exploded so milwaukee hands down idc what you say ( I tried returning it supposedly it "not theirs"
That's what I'm saying Milwaukee is the best. DeWalt sucks.
Idk how the motor exploded it just did
@@spike-- we'll see
More “S’s” mean more volts! 🤣
Wow, it’s like a year ago and back then you only had 400k and now you have more then 1M! Congrats!!!
I recommend you this tips for all the high speed cars, this tips are all to make the car more stable , less top speed but more stable and more downforce so that it stops spinning which is going to end up being faster :
- front as low as posible and rear as high as possible
- don’t put a flat rear wing because that makes the car way too unstable and if you are going to put it flat then better take it off it is just more weight that works for nothing
- take all the extra things that you can away and always try to find the lightest ones if they are necessary
- and use a stiffer suspension
Ignore these comments and stick with “ little Martin” and his “less waffle, more action”!!
And you can’t go wrong with more power!
👍🤪
Yeah but the smashing and bla blah blah what happened Bla bla smash the bell bla blah. Gets boring after a while
@@stephenthompson9722 No it does not its tradition
Locks the diffs, removes rear downforce and is then confused why it doesn’t handle 🤦🏻♂️
locked diffs add traction
@@danwitavan5146 only on high traction smooth surfaces. A crawler is the exception because your trying to get maximum power to each wheel. He would have been better using actual diff oil, even if it was thicker than stock.
@@annon1731 then he shoulda got different diff oil whats your point lol
Portercable best power tools. You need a splitter mate. For front down force. At around 65mph (first known wind velocity where efficiency becomes a factor. From 50-65 the aero becomes exponentially more or less efficient. The next wind barrier is 85mph then after that it’s 120) cheers
With the same model, I put the bottom back suspension mounts on the screw hole closer to the middle. This lifts the back with can prevent the car from flipping over and I believe can make that wing off yours useful. Hope this helps!
Kev, pls add camber to rear wheels. also make sure that the front camber is good and you have down force for the rear. Keep building that monster truck!
You need to expand the chasis to fill the gap between front and back wheels at the sides. You also need to balance weight by setting two batteries, one on each side on top of that expansion, probably outside the body of the car each as they won't fit inside, finally lower suspension is better, see sports cars.
P.D. instead of plastics, use carbon fiber
smear some white woodglue on the tires. Not waterproof. let it dry. When they heat up the "stick" to the asphalt. Drives way better. tested it some years ago.
kev i want to congratulate you on your channel i have been around since you had 39 subs i was your 40th. i can congratulate you enough.
The locked diffs may be the issue. If there is any speed difference in any of the wheels then that would cause the others to lose grip.
With the diffs open a little more then any loss or gain of grip will stay on that 1 wheel and not all 4.
Also if your tyres are slightly different sizes then this may be the cause too. Bigger on the back would make the fronts spin faster and the locked diffs would not help the power transfer.
The homemade wing has considerably more mass than the stock wing. Since all that mass is behind the rear axle, it acts as a counterweight to the front end. Either go back to the stock wing, or add a proportional amount of weight to the middle/front of the car. All the extra wing weight is also why the back rides low and the suspension seems too soft.
The flip around is because the car wants to lead with it's bulk, if that makes sense. Basically the center of gravity is way too far back
It's the wing you made is to much weight, so it makes it switch ends. I would suggest using a plastic wing with a little more thickness then the original wing. I've done this and works perfectly. I used a heat gun to bend the plastic, and have a 3D printed wing.
It might be because when the rear squats due to the body's downforce at speed, the rear wing you made will cause lift due to its angle of attack. That little guy was actually on the right track...smart kid!
Back end squats. Makes the wing no longer flat and gives the opposite of downforce. Angle it some. Give it a bit of downforce. Check the shock travel and make sure it stays in the “downforce” position throughout
If you want my opinion, I think you have to use rubber tires rather than foam tires. I know nothing about RC cars, but I think that rubber tires would significantly improve grip, which would make the car slip less. Hope this helps 😀
Should lock the front diff and leave the rear open. The car overall doesn't provide enough downforce and with the shape of the rear of the body and the angle of the wing, it might actually be decreasing the rear end downforce. Each wing, canards and the shape of the body need to line up to channel the air and not disrupt the air flow.
You need to consider rocket science when you make a land rocket. I suspect that the CG is too far back and it is acting like a rocket when you let up on the throddle and the heavy rear is whipping around after apogee ; ) love your energy, brother. Maybe let your son narrate an entire video? That would be fun.
Try using kydex, or delrin. Kydex is what I use for skid plates, holsters, mud guards and wings. Also try adding weight to the front. Will help plant the front to the ground for tracking and steering.
New camera dude? Looks decent very clear 👍
5:29 that sounded like a Lamborghini Huracàn.
I'm from Wisconsin and to see you using my states pride and joy in the uk makes me proud, subbed! You just need some snap on stuff now haha
Metal Spoiler too heavy, causes too much rear down force. You lose sufficient front end down pressure and lose steering. At the higher speed the front drag gets too much drag force and rotates to the back. Might sound counter intuitive but Add a front spoiler or a little weight to the front end. The down force between the front and rear needs a balanced downforce.
Make the suspension stiffer. If it’s too soft it gives the car the option to wobble and not allow it to stay straight
Center of pressure is in front of the center of gravity... Just tilt the wing a bit to give it some more drag (so that the center of pressure shifts back) and also some downforce.
Maybe stiffer suspention. I’ve heared from Traxxas that stiffer helps more with speedruns.
wow just found your channel, not even into rc really, but what energy! this is amazing lol liked and subbed!
Welcome aboard!
Taken a look at your rear wing I would say it has some buoyancy. Lower the front as Johnny said, give the rear wing a small amount of angle. 3-5°... This should help keeping the car down.
Keep in mind that aerodynamics tend to lift the car if your wing has no downforce. This results in a light back and let's your car spin.
maybe also a cender diff would help keeping it straight. as power kicks in the waight should be more on the back wheels and with a center diff the front wheels would just spin a bit faster as the back ones to "pull" it straight. but i dont know if there is something like a center diff for that RC.
I think the shape of the car have to be longer. More distance between wheels on longitude, will reduce spinning. Nice video!
Ppl get the to 100 with the stock body and stuff
Dude I love your videos they r the best keep it up can't wait to see the monster truck build👍
the locked diffs are causing the problem, i believe. thad the same issue with friends slash, removed the locked diff and solved. difficult to make wheels track without solid axle
I'd recommend a cutting board for the underside since there ment to be abused and cheep. If you can get a set of tires made of gum rubber I'd bet they would serve well. Super cool stuff .
the rear wing is tipped back making the rear end float, when it swings around and goes in reverse the wing is causing the down force which is why it was so stable in reverse. also the "fast car" has fins vs wing so the back end cant swing side to side
Maybe put thinner stuff in the rear diff
The back end is driving around the front
Thinner stuff in the rear will let the front pull harder and the rear not so much
The front end will pull it straight
Try removing the wing just to see what happens? Then check weight distribution next? So weird how it flips around like that. Good luck! Love the channel.
I think you need weight or downforce in the front. I believe the front is lifting or spinning and the locked up rear diff is causing torque steer once the front end loses traction. Maybe a wing off the back of a larger buggy mounted on the front
Toe in is better for straight line stability. Race cars use toe out in the front to cause the car to change directions more readily on the track
Inspiration taken from Le Mans (the film) attach some bits of string all over the car with some tape, blow air over the car and notice how the string reacts, you want the string to be as calm as possible off the back end of the car. If the string is flapping about like crazy means you’ve got rather dirty air which as there’s next to no weight for traction, could be the source of the instability
HDPE is what I would use as the bottom plate, but it would require a stiffener. They use HDPE on Kayaks and coolant bottles, you can plastic weld it with a heat gun and you will be able to shape it however you desire.
I think the esc of surpass hobby has a kick throttle after 50%. I have the same problem in two cars. It needed to program it to be smoother after 50% of throttle.
Check the alignment of the winglets on he rear wing ,if they are even slightly out alignment it has a massive effect on the directional stability.
What I would do is get some cheap spacers so you can widen the track width. And add some downforce to the rear so it will stay more stable.
This guy is a low key comedian 🤣 3:11 "some good footage" lmao🤣😂
I think you need to make it more heavy. the reason being is because all the speed is giving it lift, and possibly one side has a little more weight, and as it takes drag, it could be wanting to pull to that side. Could be wrong, but maybe not
So if it drives great in reverse, than spin the rear wing around, then it should drive good fwd. Or flip it upsidedown. Also, the earplug in the rear mite be making it spin to fast and it is overtaking the front. Thanks fpr the great vids!
@5:18 the GSM-010 & 015 models can be connected to a PC to use the GNSS logger software application to view the map where it shows where you have driven.. can this new 020 use that software on the pc so we can see the route we took, or it's just whatever is on the app?